"I don’t think anybody’s prepared the way you should be," Penny said. "But it’s fun to see. It’s like a week’s vacation, really."

Penny, who was a member of the 2003 World Series champion Marlins, threw his last Major League pitch in 2014. Bell, who was one of the biggest signing busts in franchise history, last pitched in ‘14. And Uggla, a Rule 5 draft pick for the Marlins who blossomed into one of the league’s best infield sluggers, called it quits in 2015.

The NBC is in its 83rd year and features mostly college-age teams from around the country.